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China Suppliers: Rigid Flex Printed Circuit Boards from Leading Factory for Flexible PCB Applications

China Suppliers: Rigid Flex Printed Circuit Boards from Leading Factory for Flexible PCB Applications

Flexible PCBs have become essential in the electronics industry, with a wide range of applications including wearable devices, artificial organs, medical devices, and RFID modules. As a leading supplier in China, we offer high-quality rigid flexible PCBs that serve as an innovative alternative to traditional rigid PCBs. Made from advanced PCB materials, these rigid flexible boards possess unique bending characteristics, making them ideal for integration into mobile phones and wearable products. Both semi-flexible and rigid flexible PCBs provide a robust design coupled with the flexibility to accommodate movement and vibrations in product components.

Our rigid flexible PCBs can be bent, folded, or rounded to fit various product designs, enhancing convenience and mobility for portable devices. They are commonly used in expansion cards and batteries for laptops and desktop computers. While a semi-flexible PCB offers some bending capabilities, it does not match the flexibility of our rigid flexible combination boards. This makes both types of PCBs effective solutions for portable devices, eliminating the need for rigid connections in areas with high foot traffic, as they can bend without breaking or separating. In this blog post, we will explore the diverse applications of rigid flexible PCBs and semi-flexible PCB designs, highlighting our factory's commitment to quality and innovation in the PCB market.

Product Detail

Product Application

Common applications of rigid flexible combination PCB and semi flexible PCB design

Medical Imaging Instruments

Medical applications require a large number of semi flexible PCBs. Semi flexible PCBs are used in medical devices such as endoscopes and other imaging instruments. An endoscope is a hose with a lamp at one end and a lens at the other end. Insert it into the body to view the internal structure or perform procedures such as tissue biopsy, drainage of fluid accumulation, removal of foreign objects, and dilation of narrow channels (such as the esophagus). Semi flexible PCBs have the advantages of good electrical performance and low cost. A semi flexible PCB can be bent to the desired shape, making it suitable for this application.

Other applications in the medical field:

Injection needle tip protection circuit board (ETC)
Medical device temperature control circuit board
Portable blood pressure monitor display circuit board

Automotive Applications

Semi flexible printed circuit boards (SFPBs) are used in automotive applications with high temperatures and vibrations. Flexible circuits provide excellent performance under high temperature conditions and ensure that circuit boards do not break due to mechanical shock or vibration. They are made of rigid FR-4 glass epoxy resin material and laminated with additional copper foil layers on both sides of the substrate to meet the requirements of most applications.

The main characteristic of semi flexible printed circuit boards is their flexibility, which makes them very suitable for automotive applications involving high temperatures, such as digital control units (DCUs), electronic control modules (ECM), etc. These boards can withstand temperatures up to 150 °C without damage or deformation.

Aviation

With the increasing demand for miniaturization and weight reduction, the use of rigid flexible combination PCBs for aerospace applications has increased. The combination of rigid and flexible PCBs as interconnecting devices is an effective solution that can reduce weight, size, and power consumption while improving reliability.

Rigid flexible PCB has been used in various aerospace applications, such as avionics, telecommunications, and military systems. In avionics applications, rigid flexible combination PCBs are used as connector devices between printed circuit boards (PCBs) and other components such as cables, switches, or displays. They help reduce the number of connectors required on PCBs, thereby helping to reduce the weight of the system. They also improve reliability by reducing the number of connected components.

Wearable Devices

Wearable devices are becoming increasingly popular, with smartwatches and fitness trackers being the most popular examples. Wearable devices are usually small battery powered devices worn on the body. The combination of rigid and flexible PCBs and semi flexible PCBs is used for wearable devices. Rigid and flexible PCBs are more common in smartwatches, while semi flexible PCBs are more common in fitness trackers. This is because rigid and flexible can withstand bending forces, which is important for smartwatches that need to be able to withstand impact when colliding with objects, while semi flexible is more suitable for wearable devices that need to be able to bend with the body.

Smartphones and Laptops

Semi flexible PCBs are typically used for applications where PCBs need to be bent but not bent. For example, semi flexible circuit boards are typically used to display flexible high-end smartphone and tablet systems. In these devices, a thin layer of semi flexible board is directly laminated onto the back of the monitor. This allows the display to bend but not break when folded or bent. Semi flexible plates can also be used in situations where extreme flexibility is not required. For example, they can be used on the back of devices with rigid front panels - such as many laptops and monitors.

Sporting Facilities

The main advantage of using rigid and flexible PCBs in gaming devices is that they can better prevent mechanical impact damage. This is because they have fewer layers than standard rigid circuit boards, making them more susceptible to strong external forces such as impacts or drops. The layers on the rigid and flexible PCB are also more resistant to bending, which means that if you drop the device, it will withstand greater pressure than traditional rigid PCBs. For example, game consoles require frequent bending, and the combination of rigid and flexible PCBs can easily bend or fold without breaking or cracking during use.

Bottom Line

Due to their certain characteristics and characteristics, rigid and semi flexible PCBs may score higher than their counterparts in multiple fields. Due to their similar functions, they compete fiercely with other available PCBs, providing end users with more economical choices. These applications are sometimes related, and some do not belong to any specific category. You can design which one according to your specific requirements and needs. If you would like to learn more about rigid flex combined PCBs, Borui Circuit recommends that you refer to our complete guide on this topic.

Product Parameters

Feature	AREX´s technical specification
Number of layers	1 – 12 layers, with 1 – 2 conductive layers in bending area.
Technology highlights	The process uses controlled depth routing of the FR-4 to achieve a flexible / bending section within a traditionally rigid FR-4. Only suitable for static operations – bends typically just for installation. A lower cost solution for some very specific “flex-to-fit”applications.
Bending performance	50 x bend cycles of 0° – 90° – 0°
Bend features	5mm radius / max bending angle 90°
Materials	Specialized FR-4 for static flex applications
Copper weights (finished)	35μm
Minimum track and gap	0.075mm / 0.075mm
PCB thickness	1.00mm – 2.00mm
PCB thickness in flex section	0.25mm ± 0.05mm
Maxmimum dimensions	538mm x 610mm
Surface finishes available	HASL (SnPb), LF HASL (SnNiCu), OSP, ENIG, Immersion tin, Immersion silver, Electrolytic gold, Gold fingers
Minimum mechanical drill	0.20mm
Minimum laser drill	0.10mm standard, 0.075mm advanced

Frequently Asked Questions

What are the main applications of semi-flexible PCBs in medical devices?

Semi-flexible PCBs are commonly used in medical imaging instruments like endoscopes, needle tip protection circuits (ETC), temperature control boards, and portable blood pressure monitor displays due to their shape-bending capabilities and cost efficiency.

Why are semi-flexible PCBs suitable for automotive environments?

They can withstand high vibrations and temperatures up to 150°C without deformation. They are constructed from rigid FR-4 with laminated copper foil layers to prevent circuit failure under mechanical shock.

How do rigid-flex PCBs benefit aerospace and aviation applications?

They serve as reliable interconnecting devices that reduce the size, weight, and power consumption of avionics systems. By reducing the number of physical connectors needed, they greatly improve overall system reliability.

What is the difference between rigid-flex and semi-flexible PCBs in wearable devices?

Rigid-flex PCBs are preferred for smartwatches because they withstand multi-directional impacts. Semi-flexible PCBs are typically used in fitness trackers because they bend comfortably to fit the body's natural contours.

Can semi-flexible PCBs be used for continuous dynamic bending?

No, semi-flexible PCBs are designed for static bending operations (typically "flex-to-fit" during installation). They support up to 50 bend cycles of 0°–90°–0° and are not meant for continuous dynamic movement.